so i just bought a bit char-g skyline r34 + 3.0 motor...well after a while with the 2.2 i tried the 3.0 but it didnt work after a couple tries i switched back to make sure that there wasnt any problems with the car and there wasnt it was fine...i compared both motors and the stock was a little different from the 3.0...BOTH OF THESE ARE FROM TOMY...please help i dont want to waste a good 3.0.thank you